For some reason I do not bother to dive into, openjdk is hard coded into Vuze as its preferred Java implementation on Ubuntu. When I removed openjdk, Vuze would of course not start. It is apparently a bug (or meta bug) but it is quite simple to fix.

Change one line in /usr/bin/azureus by using “sudo gedit /usr/bin/azureus” and change the line JAVA=’/usr/lib/jvm/java-6-openjdk/jre/bin/java -Xmx1024M’ to JAVA=’/etc/alternatives/java -Xmx1024M’